MekWars is a chat and campaign engine for MegaMek. Players join MekWars servers to find opponents for MegaMek games. MekWars servers can be configured to run campaigns and scenarios - tracking player's units, experience and funds.
It's a subpar product that is so full of glitches that it borders on unusable.
An amazing technical accomplishment considering the massive scope of the Battletech ruleset and fanbase.